/*
//买可乐 张三买可乐
public class Cola {

    String name;
    static int ice_black = 1;

    public void pay_for(){
        System.out.println(this.name+"买可乐,加冰："+Cola.ice_black+"块");
    }

    public Cola(String name){
        this.name = name;
    }

    public static void main(String[] args){
        Cola c = new Cola("张三");

        Cola.ice_black = 3;

        c.pay_for();
    }
}

 */
